Posting flyers or door hangers more effective?

I have tried Instagram ads and got few customers but not work the investment

I made a handwritten note, not fancy design, simple, modern, and photocopied it, added my logo and a qr code with cta on the back. Thought it might stand out since everyone uses colorful designs, etc. Dropped off about 100 of them only at houses with pools by checking on google maps. Only one person has scanned the qr code, no one has called. I dropped them off on a sunday morning, figured everyone will be at home, chilling. I'm going for round two soon, round one was a failure.

Door hangers have proven to be more effective than flyers in terms of distribution. The door hanger must be touched by the homeowner in order for it to be removed from their doors, allowing them to read or look at it more easily.

So far I have tried postcards through Vistaprint and door hangers. I’ll let you know how it turns out. My friend did Angie’s List for buying leads. They wanted too much for me monthly but it may be okay for you. 

I would say yes but this should not be the only way of advertising. Have a QR code on it that directs your customers to the website.  This is also important so you have traffic to your website.

I’ve been going back and forth on door hangers. I’m in a Facebook community just for poop scoopers, and the general consensus there is that there’s a lot of miss. I think I’m going to have some printed and door tag the two houses on either side of my customers and across the street. 

What has really worked for me is treating my Google business page like a social media account. I post there in the updates section, and I think it really helps with my ranking.